switch not recognizing content type

Hello All,

For some reason my switch is NOT working correctly.

ex)

when HTTP_RESPONSE {

if request is a static file, set cache control to be cached on the client machine for 7 days

if { [HTTP::header exists Content-Type] } {

switch -glob [HTTP::header Content-Type] {

"text/javascript" -

"text/css"-

"image/gif" -

"image/jpeg" } {

HTTP::header replace "Cache-Control" "private, max-age=604800"

}

}

}

Any thoughts why this is happening?

Regards,

TRX